Drying and heating apparatus.



MULLEN 'DRYING'AND HEATING APPARATUS.

APPLIGATION FILED JUNE 30, 1910.

Patented Sept. 30, 1913.

3 SHEETS"SHEET 1.

O. A. MULLBN. DRYING AND HEATING APPARATUS APPLICATION FILED JUNE 30,1910.

Patented Sept. 30, 1913.

3 SHEETS-SHEET 2.

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0. A. MULLEN. DRYING AND HEATING APPARATUS.

APPLICATION FILED JUNE 30, 1910.

Patented Sept. 30, 1913.

3 SHEETS-SHEET 3.

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CHARLES a. nutter; oar-new roan. n. Y.

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" specification of Letters Patent;

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, ASSIGNUR serene Ann sesame Arreeams,

Patented Sept; 30, 1913.

Application filed .l'une 2c, 1910. semi N6. 569,783.-

T0611 16. 6am it may concern! Be itflfiiown that I, Gremlins A, MULLEN,

ing and Heating Apparatus, of which the following is a specification,reference being had-therein to the accompanying drawing a This inventionrelates to improvements in drying andheating apparatus for treating"gravel, sand,- g'rit, broken stone, or other llke granular substances,the principal object be ing' to provide an apparatus which willeffectually remove the .moisture froln and sufficiently heat thematerial by a continuous process for its utilization in constructing,renovating or repairing roadways, roofs, composition pavements, as afiller in joints of block pavements,- and in all industries requiringthe ganular material in a. heated and dried-condition. T

In constructing all of the drying and heating apparatus of the generaltype of this ,mvcntion, they have ignored either theadvantage andnecessity of gravitating the material to bedried and heated. di ectlyover the side of the furnace, or the advantage and necessity ofgravitating said material n a thinand approximately even layer throughwhich thelueat or products of combustion may readily penetrate. It istherefore proposed in the present invention to provide a 'gravitating,drying and heating apparatus which includes a furnace, and a drying andheatin compartment having sides so arrapg as to contain a thin andapproximate y even layer of the material to be dried and'lheated, saidcompartment arranged about said furnace so that the innerside of thecompartment is the side of the furnace.

The invention furtherconsistsof certain novel details of constructionand combinations and arrangement of parts, all as will be now describedand the particu ar, featnres of novelty pointed out in the a pended J IV i In the drawings :Figure 1 is a perspective view of my improveddrying and heat ing apparatus,- a-portion of 'one of the endplates-being broken away, Fig.- 2 is an end of the same shown partlyin.section,

. of the material to be drie Fig.- 3 is a side elevation of the dryingand heating apparatus.

In carrying this invention into practice, and having particularreference in this 'instance to Figs. 1, 2 and 3 ofthe drawings,-

make use of a furnace, having two sides a,-a preferably perforated, andso arranged roofwise as to resemble in cross section, an inverted letterV, and two end plates 6,- b a fire door 0 being. provided inone of theend plates, and a flue d with a damper e,extending from the other endplate for carrying oil products of combustion. It'will be noted that theend plates hand 6 extend some distance beyond the perforated sides ofthe furnace, and thus serve as end plates for the heating and dryingcompartments, which compartments are arranged at the sides of saidfurnace. The end plates are secured in proper position r'elative'to thesides of the furnace by meansof angle irons 7 to which the said sidesand en plates are securely bolted or riveted.

As has heretofore been pointed drying and heating compartments as toacc'ommodate'therein out, .the aresuch a verythin layer and the sides ofthe furnace form the inner sides of said compartments, the outer side ofeach compartment being made up of a series of downwardly and inwardlydeflecting flights g, which are preferably perforated, and which arearranged in a line slightly separated from the sides of the furnace andapproximately parallel thereto, extending from the top to a point slihtly above the, base of the furnace. These flights are of approximatelythe same length as the furnace sides, and are secured at their ends tothe extensions of the end lates by means of an is irons h, which a-nglieirons are also bolte' or otherwise secured to the top edges of saidflights.

As a further support for these flights, one or more are or stripsin theform of inverted T ironsz are bolted or riveted to the sides-of thefurnace, which irons" are-provided with vertical slots j within whichthe flights are su' ported A'suitable opper 7a is arranged above theapex of the furnace structure, a-nd is' secured in lace by bolts orrivets to the uppermost dighton each side of the furnace, and to the endplates of said furnace, said I on each side of the furnace.

hopper adapted to receive the material which it is' desired to dryandheat-,and feed the same into the two compartments through theopenings formed at the upper edges of the furnace sides and theuppermost flight As has been stated, the lower flight on each side ofthe furnace is-arranged aslight distance from.

the base of said furnace, and in this .way an exit for the materialbeing dried and heated, isformed, so that the material is discharged, ifit be desired, in a pile on the ground at the base of the furnace sides,from whence it may be taken in a dried and been treated, allowing theheated and dried material to fall in its place and be removed for use,when, asfastas it is removed, an

equal quantity from the untreated supplymu'stbe added at the hopper,thus creating a continuous gravitating process during which the desiredresult is accomplished.

The grate of the furnace is illustrated at Z and said grate is supportedon angle irons m, one on each side of the furnace, which are securedattheir ends to the end plates 6 and Z). Cast-er wheels 02 are'providedat the four corners of the furnace structure, and

are preferably secured to the end pla'tes asshown, and in this mann'erthe heating and drying apparatus is madeportable'and can be easilycarried along as the, work progresses, a handle obeing provided formovmg said apparatus when desired.

In using my improved drying and heat I ing apparatus, and after the firein the furnace is well started, I close the damper in the flue, thusrequiring the products of combustion and heat to be forced out throughthe perforations in the through the gravel, and then through theperforations in and the spaces between the downwardly and inwardlydeflecting flights.

By thus using the apparatus, a more,com-' plete utilization of all theheat and products of combustion can be had, for the reason that theycannot escape doing their work ofdrying 'and heating on their way outthrough the perforated sides, and through the'gravel, they having nomeans of escape except by these passages.

The hopper may be of any convenient shape that will discharge thematerial to be dried and heated through an opening in its bottom intothe openings at the top of the furnace sides,

desired, a storage bin p, such as shown in drying and heatingcompartments, and if Fig. 2 of the drawings, may be placed below i theexit at the bottom of said drying and Y heating compartment orcompartments to until the same is needed for use.

.Having' thus fully described my invention, 'What I claim and desire'toprotect by Letters Patent, is 2- V 1. In a gravitating drying andheating. apparatus, the combination of a furnace apparatus, thecombination of a furnace having sides and end plates, metal bars orstrips secured upon the exterior of'the sides of said furnace, and aseries of flights arrelation therewith and being supported by with saidfurnace sides a compartment through which the material to be dried andheated may pass in a thin and approximately even layer. I p

3. In a gravitating drying and heating apparatus, the combination of afurnace having sides and end plates, metal bars or strips secured uponthe exterior of said furnace sides and having slots formed therein, anda series of flights arranged adjacent said furnace sides in spacedrelatiomtherewith and engaging within said slots, whereby they aresupported and held in position, said flights forming with said furnacesides acompartment through which the material to be dried and heated maypassin a thin and approximately even layer.

apparatus a furnace consisting of a perforated sheet of'metal bent overroofwise to form two heating sides arranged directly above the floor ofsaid furnace, end plates secured to the edges of-said sides, said endplates having extensions which project-beyond the sides of the furnace,and a series of flights arranged lengthwise of the furflights beingsecured and supported by the said extensions of the end plates, and saidflights and the sides of the furnace forming a drying and heatingcompartment for containing a thin approximately even layer of thematerial to be treated.

5. In a gravitating drying and heating neceive and contain thedischargedmaterial having sides and end plates, metal bars or" said bars orstrips, said flights forming.

nace at spaced intervals therefrom, said.

bars or strips, said flights forming with Y v2. In a gravitating dryingand heating i ranged adjacent said furnace sides in spaced 4. In agravitating drying and heating 1 apparatus, the combination of a furnacehaving sides and end platesarranged above the fire of said furnace, saidend plates having extensions which project beyond the 'sides of thefurnace, downwardly and inwardly directed flights arranged lengthwise ofthe furnace and approximately parallel 1 to its sides, said flights beinsecured to the said extensions of the end p ates, which extensions serveas the end Walls of acornpartment which is formed between the sides ofthe furnace and the flights, and a hopper arranged above the furnace andadapted to feed the material to betreated to the drying flights beingsecured to the said extensions of the end plates of the furnace, whichextensions serve as the end walls of a compartment which. is formedbetween the sides of the furnace and the. flights, and partitionsarranged within the compartments and serving to suppor the flights.

7. In a gravitating drying and heating apparatus, the combination of afurnace having sides and end'plates, a drying and heating compartmentarranged about the furnace, angle irons arranged lengthwise of thefurnace along the sides thereof and se cured at their ends to the endplates, and a furnace grate supported on said angle irons.

8. In a gravitating drying and heating 'apparatus,'a drying and heatingcompartment constructed to contain a thln approximately even layer ofthe material to be dried, said compartment having perforated sides andbeing so arranged in relation to the furnace or fire box that the directheat and products of combustion-from 'said fire box will be drawnthrough the gravel by the draft passing out through the perforations .inthe sides of the heating and drying compartment, thus taking off-themoisture and heating the material.

9. In a gravitating drying and heating apparatus, the combinatlon of afurnace having sides and end plates, metal bars or strips'secu'red uponthe exterior of the sides of said furnace and transversely arrangedthereon at intervals throughout the length of the sides, and a series offlights arranged lengthwise of the furnace and forming with said furnacesides a compartment through which the material to be dried and heatedmay pass in a thin and approximately even layer.

in presence oftwo witnesses.

CHARLES A. MULLEN. Witnesses:

' H. GERALD CHAPIN,

GEoReIANA M. WALTER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, IMO.

In testimony-whereof I affix my signature

